Wikitude

onEnterFieldOfVision is not fired after AR.context.destoryAll()

I made Tracker and Trackable2DObject like this, and it works without any problems.

 

 

makeTracker: function makeTrackerFn() {

    this.tracker = new AR.ClientTracker("assets/tracker.wtc", {

        onLoaded: function(){

            AR.logger.info("marker loaded");

        }

    });

 

    this.marker = new AR.Trackable2DObject(this.tracker, "a", {

        onEnterFieldOfVision: function(){

            AR.logger.info("Marker Catch ");

        }

    }

});

 

 

However after AR.context.destroyAll(); onEnterFieldOfVision is not fired anymore.

 

My test procedure is like this below.

 

/*check point 1*/

AR.logger.info("1:World.tracker.enabled:" +World.tracker.enabled);// >> true 

AR.logger.info("1:World.tracker.src:" +World.tracker.src);// >>  assets/tracker.wtc

AR.logger.info("1:World.marker.enabled:" +World.marker0.enabled);// >>  true

AR.logger.info("1:World.marker.destroyed:" +World.marker0.destroyed);// >>  false

 

AR.context.destroyAll();// Destory

 

/*check point 2*/

AR.logger.info("2:World.tracker.enabled:" +World.tracker.enabled);// >> undefined

AR.logger.info("2:World.tracker.src:" +World.tracker.src); // >> undefined

AR.logger.info("2:World.marker.enabled:" +World.marker0.enabled); // >> undefined

AR.logger.info("2:World.marker.destroyed:" +World.marker0.destroyed); // >> true

 

World.makeTracker();// remake the Tracker and Trackable2Dobject.

 

/*check point 3*/

AR.logger.info("3:World.tracker.enabled:" +World.tracker.enabled);// >>true

AR.logger.info("3:World.tracker.src:" +World.tracker.src); // >>assets/tracker.wtc

AR.logger.info("3:World.tracker.destroyed:" +World.tracker.destroyed); // false

AR.logger.info("3:World.marker.enabled:" +World.marker0.enabled); /// >> true

AR.logger.info("3:World.marker.destroyed:" +World.marker0.destroyed); // >> false

 

 

I have confirmed tracker aned trackable2Dproject is destoroyed after AR.context.destroyAll(), ( Check Point 2)

 

then confirmed that Tracker and Trackable2Dobject is correctly re-created ( Check Point 3)

 

However onEnterFieldOfVision is not fired anymore.

I really appreciate if you have any clues.